I'm guessing since you didn't mention it, that you have a few mods installed. IF SO ------The water blinking is a texture overlay poochscrew (it's called a "bleedthrough"). Some idiot thought instead of replacing the water with the new texture, they added it to the existing one. (they should hang the idiot who did that one). I know this one because I've been using the "official" HD texture pack and the water displays this particular problem. The devs screwed this one.The jumping horkers is a physics poochscrew that some genius modder neglected to account for the water. You can see they're trying to walk on the water .. which is a physics "no-no". The physics engine is trying to keep them on a surface that's supposed to be "phantom" (not physical). The horkers are trying to go into the water as they're supposed to but a physics parameter is saying they can't because it's a solid surface. So it compensates by pushing them up. It's a conflict.Your two problems are directly related and it's being caused by a water mod.

Ofcourse it is, i want the game to be at 144 fps. (only managed to do that indoors since the game aint using more than 2 cores)

That's exactly why your animals are jumping around however. Skyrim isn't designed for anything over 60 fps, an unfortunate limitation in the game's engine. Not only does it mess with the physics, but it can cause other issues as well (timescale, etc).

The water flashing issue is present unmodded, but can be exaggerated by mods. Loading water mods last helps.